Workflow is configured for article (for example).
1. Go to Content/Content structure and click Create
2. Select Article
3. Fill required fields and send it to the next stage
4. Go to Dashboard and click edit button next to the recently created draft
5. Click Delete draft
6. Click User menu and select Notifications
Notification from the last created draft is still active, even if there is an information "Publication permanently deleted". User can click it and "Not found" information message will be displayed with every single click - see attachment, please.
Notification can be inactive just like it is when publications is sent to trash - see attachment, please.